Road-surfacing machine



June 8 1926. 1,587,949

(3. c. HANSEN ROAD SURFAC I N( w MACHINE Filed July 10 1925 INVENTOR. mvies (1 Hanacn HIS ATTOR YS.

Patented June 8, 1926.

1,587,949 UNITED STATES PATENT OFFICE.

CHARLES C. HANSEN, OI EASTON, PENNSYLVANIA, ASSIGNOR 'I'O INGEBSOLL-BAND COIPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BOAD-SUBFACING MACHINE.

Application filed m 10, 1925. Serial in. 42,044:

This invention relates to surfacing machines, but more particularly to a machine for surfacing concrete roads.

Usually in concrete road construction. the

. concrete is poured in rectangular sections. After the concrete assumes a permanent set, strips forming the sections are removed. In this way a slight space is formed between the sections to. allow for contraction and expansion of the concrete. However, during the initial set of the concrete, a portion of the matrix clings to the strips and forms a ridge along the edges of the sections.

It is accordingly an object of this invention to enableridges or roughened surfaces to be readil removed from a concrete road in a simpli ed and improved manner..

-Another object is to utilize the exhaust pressure fluid from the machine for remov- 1n cuttings from the working face.

' %)ther objects will be in part obvious and in part pointed out hereinafter.

The invention consists of the combination of elements, features of construction and arrangement of parts having the general mode of operation substantially as described hereinafterand more particularly pointed out in the appended claims and illustrated in the accompanying drawings, in which Figure 1 is a side elevation in section of a road surfacing machine,

Figure 2 is a stop plan view of a portion. of the road surfacing machine taken through Figure 1 on the line 2-2 looking in the direction of the arrows Figure 3 is a perspective view of a cradle for supporting a fluid actuated percussive tool on the machine, and

Figure 4 is a top plan view of the hinged I ide secured to the bottom of the shell d r guiding the working implement.

Referring to the drawing, an axle A is supported by wheels B, onl one of which is shown. A pair of tubu ar rods 0 are clamped to the axle A by means of clamps D and are curved upwardly to form handle bars "for moving and guiding the machine. Secured to the axle A is a shell E. The shell E is additionally supported by braces F which are secured to the shell by means of screws G at one end, and at the other end are secured to a cross'piece H by bolts J, which also serve to clam the cross piece H to the handle bars C. rod K is secured to one end of the-shell E and supports at its outer end a cross head L. The end of the rod K is threaded to receive a nut O for securing the cross head. in position.

In this instance a feed screw P is arranged rotatably in the cross head L and has a handle Q secured atone end whereby the operator may rotate said screw. The feed screw P extends longitudinall through the shell E and at its lower end is journaled within a bearing R supported at the lower end of the shell E. The bearing R is preferably provided with opposed guides S to cooperate with suitable guideways T formed in the shell E for preventing rotation of said hearing.

In order to adjustably support a. fluid actuated rock drill U, a saddle V having guides W slidable in the guideways T is arranged to slide longitudinally in the shell E and cooperates with the feed screw P by means of a feed nut X arranged in one end of the cradle and secured against endwise movement by a nut Y. The interior of the feed nut X is threaded to correspond with the threads formed on the screw P so that by rotating said feed screw the saddle V together with the drill U may be raised or lowered as desired.

In order to hold the rock drill U in operative position, a projection Z is formed at one end of the saddle V and is provided with a recess b to conform to a cylinder 0 of the of the rock drill U. A clamp d is hinged to the projection Z by means of a pivot e and like the projection Z has a recess f to conform to the shape of the cylinder 0. Any suitable means may be employed for securing the clamp 03 firmly in position, in this instance an eye-bolt g is indicated. The eyebolt 9 is preferably pivoted in the projection Z as at h and is adapted to be rocked into a slot formed in the free end of the clamp 01. The free end of the eye-bolt g is threaded to receive a suitable nut k whereby the clamp d may be clamped in position.

At the other end of the cradle V an overhanging projection 0 is formed integral therewith and a plurality of grooves p are formed in one side of said pro ection for receiving a handle of the rock drill U. In order to hold the handle g in the groove p a clamp plate r is arranged beneath handle and has slots 8 at its ends to receive su orts t of the handle. Holes 11. and o are'f drmed in the clamp plate 1 and the projection 0 re- -the screw w fora spectively to receive 'a clamping screw 20.

In this instance, a spring :0 is arranged about sorbing vibration when .the machine is in operation and a nut y is screwed on the end of the screw to for tightening the clam ing plate r and for varying the tension of t e spring :22.

Convenient means are provided for guid ing a working implement 2 near its outer end. To this end a plate 2 having a recess 3 in one end is secured to the bottom of the shell E and the bearing R. A plate 4 is pivoted to the plate 2 as at 5 and like the plate 2 also has a recess 6 to receive slidably the implement .2; The plates 2 and 4 are provided with holes 7 and 8 respectively into which a pin or other suitab e means may be arranged for holding the plate 4 in position.

The admission of pressure fluid to the drill U is in this instance controlled by a throttle valve 9 secured to the end of one of the handle bars C. The handlebar supporting the throttle valve is connected with the rock drill U by means of a flexible hose 10.

The exhaust of pressure fluid from the drill is conveyed through a flexible tube 11 connected to the exhaust outlet of the drill at one end and at its other end carries a nozzle 12 which may be directed toward the working end 13 of the implement 2 so that while the drill U is in operation, the exhaust pressure fluid will blow away the cuttings. In this way, a clean working face may be maintained at all times and the operator will know the exact condition of the work with out being compelled to discontinue operation of the tool while the cuttings are being removed.

The advantages of the invention reside in,

the fact that a clean working face may at all times be maintained and due to the adjustable feature provided by the screw P, the drill may be raised or lowered to suit varying conditions and since the guide plate 4.- is pivoted, the implement 2 may be readily rereceive the hammer blows of the tool, a shell 1 clamped to the axle, means for preventing relative movement between the shell and the handle bars, a hinged guide at one end of the shell for guiding the implement, a cradle slidable in the shell, a hinged clamp secured fixedly on one end of the cradle to guide the tool, a springpressed clamp sev cured fixedly on the opposite end of the cradle to enga e the handle for supporting the tool, a fee screw rotatable in the shell cooperating with the cradle for adjusting the tool, and a handle for rotating to actuate the cradle in the shell.

2. A road surfacing machine comprising a pair of wheels, an axle for the wheels, a pair of handle bars clamped to the axle for guiding the machine, a fluid actuated percussive tool having a handle, an implement to receive the hammer blows of the tool, a shell clamped to the axle, means for preventing relative movement between the shell and the handle bars, a hinged guide at one end of the shell for guiding the implement, a cradle slidable in the shell, ahinged clamp secured fixedly on one end of the cradle to guide the tool, a spring pressed clam secured fixedly on the opposite end o the cradle to engagethe handle for supporting the tool, a feed screw rotatable in the shell cooperating with the cradle for adjusting the tool, and a handle for rotating the screw to actuate'the cradle in the shell.

In testimony whereof I have signed this specification.

CHARLES C. HANSEN.

the screw I 

